The barrel of the gun is definitely the most important part of all gun weapons.

It's no exaggeration to say!

In Grandpa Zhou Yu's generation, as long as you give a qualified gun barrel, even if the person has never studied, he can make you a gun.

At most it's...

In terms of performance, there are no formal rifles, and the 38-large rifles are only excellent in Hanyang.

But it's more than enough to be a hunting rifle.

so.

In the following time, Zhou Yu was trying to make the barrel. The barrel used is not completely iron. To be precise, it should be carbon ferroalloy, which is commonly known as high-quality carbon structural steel, with a carbon content between 0.6% and 0.8%!

Its advantages are high toughness, high hardness and high wear resistance!

Considering that border construction is a preliminary study.

Therefore, the first batch of barrels were made without boron or chrome plated. Moreover, there was no such condition.

Zhou Yu calculated that the service life of such a barrel is expected to be around 5,000 rounds.

Definitely enough!

Now most of the materials are ready.

What we need to do next is how to solve the problem of gun barrel production.

In ancient my country, those muskets, cannons, etc. were basically made of casting methods. They were cheap and convenient, but this method would make the inside of the barrel not smooth and produce bubbles. The most serious thing was that it was extremely easy to explode.

It's obvious.

Ancient casting technology is no longer applicable to this period.

The most typical case is the barrel produced by the Huangyadong Arsenal. This is the method they used, which eventually led to the gun produced by the Huangyadong Arsenal who faced the danger of a blow-off after every dozen bullets fired.

Regarding this!

Zhou Yu decided to adopt new technology.

——Forged drilling!

First make seamless steel pipes, then use a drilling machine to drill holes on a section of blank pipe, polish the inner wall smoothly, and then use hook cutting method to engrave the rifle.

These things are simple to say.

But it's hard to do it.

Not to mention that the employees involved in the production of the border area do not know how to operate, Zhou Yu himself has had constant problems in the early production and has repeatedly missed.

He threw one failed steel pipe after another to the ground.

He has been failing.

But his stubbornness in character made Zhou Yu compete with him, and the more he failed, the more he persisted.

Although the military order has exceeded one month's deadline.

But in the end!

He made a barrel that met his requirements, and then began to assemble the components with the stock, bolt, rotary locking bolt and other components that had been made. As for some parts that had not been made, Zhou Yu took the initiative and developed it overnight.

that's all!

With the joint efforts of all employees, the first sample gun of the M1 Garland rifle was assembled.

Don't look at it only has one sample gun!

But this is a breakthrough from zero to one, from nothing to something in the border area.

With the first one, there will be a second one and a third one... until it can be mass-produced!

Zhou Yu was so excited now that he held the gun in his hand. After checking it, he couldn't help but sigh: "Although it's past the deadline, I'll probably not shoot me when I give this gun to the boss, right? Hehe, the Japanese's 38th hood is not as good as my gun. I think what the boss has to say this time!"

Because the bullets used in the M1 Garland rifle are 7.62mm caliber.

so!

Zhou Yu asked the employees of the first factory to start producing some 7.62mm bullets that match the caliber of the gun.

However, this delay.

The one-month period has passed for a long time, but fortunately the boss has not sent anyone to cause trouble for him.

Wait until the bullet is produced.

Zhou Yu immediately started testing the sample gun. As for testing, the easiest way is to shoot! After Zhou Yu fired more than 20 bullets, he checked the barrel, but found no signs of cracks in the chamber.

Moreover, there is no problem with this gun as a whole.

so.

Zhou Yu knew that the quality of this sample gun was qualified.

After thinking about it.

He felt that there was no problem, so he planned to send someone to the headquarters tomorrow to send the sample gun.

Let the boss and the old man pass by it.

As long as the boss thinks it is OK, Zhou Yu can apply with the superiors, continue to vigorously reform the border areas and allocate more people to come.

This will expand the scale of border construction.

What a pity.

Plans can never keep up with changes.

At night, the Yamazaki brigade, a Japanese devil who was raised by the bitch, took advantage of the night to touch the abdomen of our army's base!

It happens!

I collided with me 386th Brigade.

The battle between the two sides started in an instant!

At this time, Zhou Yu wanted to send the sample gun to the headquarters, but he was afraid he couldn't deliver it.

not to mention.

The brigade commander just now sent a messenger to call Zhou Yu, who is the political commissar of the Independent Regiment, to the brigade headquarters for a meeting. As for the content of the meeting, Zhou Yu didn't have to guess, it was nothing more than a target of this Yamazaki brigade, which regiment should be sent to destroy them.

Must be eliminated!

This is an order from the head office boss.

The 386th Brigade will destroy the Yamazaki Brigade, which was raised by the bitch, at all costs!

Zhou Yu received the order from the brigade commander and immediately rode his horse to the brigade headquarters.

Before leaving.

The arsenal was also specially arranged to resume production of grenades. Before, the border area was limited by conditions and there was no sufficient iron ore, so the grenades produced were of extremely poor quality, with only two petals per blow.

It's different now.

It has iron ore and reproduction of imitation German m24 grenades, and its power will not be much different.

At most, the explosion intensity will be weaker.

after all.

Our army's grenades are not used for tnt, so no matter how well they are made, their power will still be almost the same.

After making this arrangement.

Zhou Yu went to the brigade department to attend the meeting in a hurry, but after arriving at the venue, he found that the representatives of the 386th Brigade were all the leaders of the delegations, and only the independent group was called by him, the political commissar who "does not do serious business"!

This is strange.

Why didn’t the brigade commander call Li Yunlong for a meeting? Are you afraid that Li Yunlong will fight him?

Zhou Yu didn't know the reason.

but!

At the meeting, Cheng Xiazi, the commander of the 772nd Regiment, applied to the brigade commander for the main attack with the appearance of a boss!

Ding Wei was leisurely closing his eyes and resting attentively.

He is a person who cannot afford to get up early!

The Japanese Yamazaki Brigade is difficult to deal with, especially now, the opponent occupies a place as easy to defend and difficult to attack, which is difficult to defeat. Even if Ding Wei attacks with the new regiment, the seized weapons cannot be occupied like Li Yunlong!

Most of the soldiers under his command will definitely be killed or injured.

No matter how he was planning, he Ding Wei felt that he had lost. Unless the brigade commander called him, he would not compete with Cheng Xiazi for this main attack mission.

As for Zhou Yu?

He is still in a state of confusion.

I don’t know how to fight, so why did the brigade commander call him?

The two commanders of the Independent Regiment are here now, one is Kong Jie and the other is Li Yunlong. The brigade commander did not call them, but instead called him Zhou Yu up. What are you doing?

Looking at Cheng Xiaozi who was expressing his opinion on the application for the battle.

Zhou Yu gradually realized it.

It seems that the first candidate in the brigade commander's mind for this battle is Faye Cheng.

You must know...

Originally, there were four regiments under the 386th Brigade, namely the 771st Regiment, the 772nd Regiment, the New First Regiment and the Independent Regiment led by Li Yunlong.

When the War of Resistance broke out.

Our army and the National Army reached a joint war of resistance, and the principle of gunfire was consistent to the outside world, and were organized into the 18th Route Army. In the early days, the National Army would also pay food and guns, but we were required to disarmament to ensure limited organization.

then.

The Independent Regiment and the New Regiment were not included, and only the 771st Regiment and the 772nd Regiment were left, becoming the corps-level units in the process.

later.

The 771st Regiment, which had the strongest combat effectiveness, was transferred from the 386th Brigade because of some things, and the combat effectiveness of the 772nd Regiment, the New First Regiment and the Independent Regiment were left.

future.

A new second group may be established, but that will happen in the future.

Just talk about now!

After the 771st regiment was transferred out, as the saying goes, there are no tigers in the mountains, and monkeys dominate the king. He was blind in the 772nd regiment and became a spirit.

No matter where he goes, he regards himself as the main team of the 386th Brigade!

This time, in order to fight against the Yamazaki brigade, the Yamazaki brigade, in front of the brigade commander, Cheng Xiazi severely demoted the combat effectiveness of the two units, the Xinyi Regiment and the Independent Regiment.

Fortunately, Ding Wei was not willing to go to war in this battle, so he ignored it. Otherwise, due to Ding Wei's urinary nature, he would have to soak Cheng Xiaozi and wake him up.

As for Zhou Yu!

Because he didn't know how to fight, he let blind man Cheng show off his power in front of the brigade commander.

The purpose of the brigade commander let him attend the meeting.

Zhou Yu thought it out in his heart.
Chapter completed!